Brake for horse-power machines



(No Model.)

T. P. CHAMBERS. BRAKE FOR HORSE POWER MACHINE$.

No. 595,522, Patented Dec. 14,1897.

IN VE N 7'05 A TTOHNE Y8,

PATENT OFFICE.

THOMAS r. CHAMBERS, or NEWTOWN, PENNSYLVANIA.

BRAKE FOR HORSE- POWER MACHINES.

SPEGIFICATION forming part of Letters Patent No. 595,522, dated December14, 1897.

Application filedAplil 1897- To all whom it may concern:

Be it known that I, THOMAS P. CHAMBERS, of Newtown, in the county ofBucks and State of Pennsylvania, have invented a new and Improved Brakefor Horse-Power Machines, of which the following is a full, clear, andexact description.

The object of my invention is to provide a brake for horse-powermachines which, in the event the tread-floor should travel too fast forthe animal operating the same, it may be stopped entirely or checked toany required extent.

Another object of the invention is to provide a brake capable ofaccomplishing the above-named results which will be exceedingly simple,durable, and economic.

A further object of the invention is to provide abrake of the characterabove set forth which will be applicable to any horse-power machine.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a central vertical section through a horse-power machinehaving the improvement applied. Fig. 2 is a horizontal section on theline 22 of Fig. 1; and Fig. 3 is an enlarged view of an end portion ofthe brakefra1ne,illustrating its application to the treadfioor.

The housingAfor the animal, together with the tread-floor B of thehorse-power machine, may be of any desired construction. Between theupper and the lower stretches of the treadfloor a brake-frame O islocated, which is the subject-matter of the present invention. Thisbrake-frame is shown as consisting of two cross-bars 10, two side bars11, and a crossbar 12 at each end of the side bars. The side bars 11 ofthe brake-frame are arranged for engagement when necessary with theupper peripheral surfaces of the rollers 13 on the lower stretch of thetread-floor. The brakeframe is prevented from rising too far from thelower set of rollers on the tread-floor through the medium'of thecross-beams 10,

with teeth 14 Serial No. 632,473. (No model.)

which are attached to the base-frame of the housing A.

On each side bar 11 of the brake-frame O a plate 14 is inclined indirection of the inclination of the tread-floor, as is particularlyillustrated in Fig. 1. The-upper surface of each of the said plates 14is further provided A guide-hanger 15 is secured to the side beams ofthe base portion of the housing A near each end of the brake-frame, theupper end portions of the guide-hangers having an inclinationcorresponding to that of the top of the toothed plates 14, as shown inFig. 3. Each hanger at its upper inclined end is provided with atransverse slot 16, following the inclination of the upper surface ofthe hanger, and pins 17 are projected from the side portions of thebrake-frame into the said slot 16, as is likewise best shown in Fig.3.

A longitudinal beam 18 is attached to each end portion of thecross-beams l0, limiting the upward movement of the brake-frame.Bearings or boxes 19 are secured upon the longitudinal beams 18, thesaid bearings or boxes being in transverse alinement. Each bearing orbox receives the pivot-pin of a toothed segment or sector 19, the teethof the sectors or segments engaging with the teeth of the plates 14,attachedto the brake-frame. A link 20 is attached to the upper end ofeach sector or segment and also to a crank-arm 21, the said crank-armsbeing secured upon a shaft 22, which is journaled in the base portion ofthe machine. At one or both ends of the shaft 22 a lever 24 is attached,usually through the medium of crank-arms 23, as illustrated in Fig. 2.

In the operation of the machine the brakeframe is normally held justclear of the rollers 13 on the lower stretch of the tread-floor. When,however, the said tread-floor moves too rapidly, by raising the lever 24the sectors or segments 19 are rocked in direction of the lower portionof the tread-floor and the brakeframe is therefore carried downward to amore or less decided engagement with the lower rollers of thetread-floor, stopping the movement of the floor partially or altogether,as may be required.

This brake mechanism is exceedingly simple. It is durable and economicand maybe applied to any form of horse-power machine.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination with the tread-floor of ahorse-power machine and the base supporting the same, of the brake-frameprovided with bars arranged for engagement with the stretch of thefloor, and an operating device carried by the said base, said deviceengaging said bars and by which the latter are moved into and out ofengagement with the floor.

2. The combination, with the treaddloor of a horse-power machine, abrake-frame lo cated over the rollers on the lower stretch of the fioor,and means for limiting the upward movement of the brake-frame, of acrank shaft, means for operating the crank-shaft, projections from thebrake-frame having inclined toothed surfaces, toothed segments engagingwith the toothed surfaces of said projections, and a connection betweenthe segments and the crank-shaft.

The combination, with the tread-floor of a horse-power machine, ofbrakes located over and adapted for engagement with the lower stretch ofsaid tread-floor, a shaft, means for operating the shaft, crank-armsprojected from said shaft, extensions from the brakes having inclinedtoothed upper surfaces, toothed segments engaging with said inclinedtoothed surfaces of the brakes, being con nected with said crank-arms,and stationary guides for the brakes, having an inclinationcorresponding to that of the toothed extensions from the brakes.

4. The combination, with the tread-floor of a horse-power machine, abrake-frame held for engagement with the lower stretch of said floor,and means for limiting the upward movement of the brake-frame, of arock-shaft, extensions from the brake-frame,having their upper surfacestoothed and inclined in direction of the inclination of said floor, andtoothed and pivoted segments operating upon the toothed surfaces of saidextensions, bein g operated from said shaft.

5. The combination, with the tread-floor of a horse-power machine, abrake-frame held for engagement with the lower stretch of said floor,and means for limiting the upward movement of the brake-frame, of arock-shaft, extensions from the brake-frame, having their upper surfacestoothed and inclined in direction of the inclination of said floor,toothed and pivoted segments operating upon the toothed surfaces of thesaid extensions, be-

ing operated from the said shaft, stationary guide-hangers having slotstherein, and inclined correspondingly to the inclination of theextensions from the said brake-frame, and pins extending from thebrake-frame, into the slots of the said guide-hangers.

6. The combination with a tread-floor of a horse-power machine and thebase supporting the same, of the brake located between the stretches ofsaid floor, a shaft carried by said base, an operating device on saidshaft and engaging said brake to move into and out of engagement withthe stretch of said floor, means for operating said shaft and a stopdevice on said base and by which the movement of brake away from thestretch of the floor is limited.

THOMAS P. CHAMBERS.

Vitnesses:

WILLIAM J. ELLIS, HORACE G. REEDER.

